BIOS message: CPU is unworkable or has been changed

I recently reset my CMOS settings while trying to diagnose a shutdown problem a week or so ago. Turns out a USB connection was causing my mobo (Intel Q6600 on an Abit IP35V motherboard) to not get power. After resolving this problem, upon my first boot (and every subsequent boot thereafter) I get a message on my BIOS: "CPU is unworkable or has been changed, CPU soft menu". Also at the top of this screen in white font (instead of grey) is this:

C1E BIOS Supported
EM64T CPU

Is this message anything to be concerned about? Below are my BIOS settings for the CPU and my computer specs follow.

Frequency: 1.60 ghz
CPU Operating Speed: 2400 (266)
Multiplier Factor 9x

Voltages Control: Default
CPU Core Voltage: 1.2250 V
DDR2 Voltage: Auto
CPU VTT Voltage: 1.2000 V
1CH 1.5V Voltage
CPU GTLREF: 63%

Specs: Antec 900 case, Nvidia 8800 GTX, 6600 Intel quad core processor, Corsair 520 W power supply, 750 GB HDD, DVD burner.